Fully Automated Anodising Plant

Anodising: an electrochemical process that creates a thin layer of aluminium oxide on the surface of aluminium, the layer provides increased corrosion resistance and can also be used for decorative purposes.

Proudly the newest anodising plant, commissioned on our Wellington site, 2021 and is fully-automated.

We produce silver and coloured finishes for all extrusions, from decorative through to full 25-micron thick marine grade anodising.

Anodised aluminium is commonly used in a variety of applications, including architectural elements, consumer electronics and automotive parts. Its high resistance to corrosion and ability to be coloured make it a popular choice for both functional and aesthetic purposes.


The Process

During the anodising process, the aluminium is placed in a bath of electrolyte solution and a direct current is the passed through the solution, causing an oxidation to occur on the surface of the aluminium. This results in the formation of a layer of aluminium oxide, which is typically between 5 – 25 microns thick, depending on the product needs.

The thickness and properties of the anodised layer can be controlled by adjusting the voltage and current used in the process, as well as the composition of the electrolyte solution. The resulting anodised layer can be left as a natural, matte finish or dyed in a selection of colours.

Alexco. Quality aluminium extrusions. In house die design. Small to medium profiles. Specialised extrusions. Mill finish. Powder coating. Anodising, fabrication
Our fully automated plant is on the one site with our extrusion press and anodising plan